Highly recommend you look at this before you buy another leupold, or vortex for that matter.
This one lost zero riding in the backseat of a truck; let alone a horseback ride up to 14k feet.
This is a field evaluation of a Leupold VX-3HD 3.5-10x40mm CDS-ZL scope. This scope was sent to Ryan Avery for an evaluation. The ammunition used was Hornady Black 168gr AMAX that was purchased by Ryan. The 20 round proof group was just over 1.3 MOA. The scope and weight- Turrets...
rokslide.com
If you want simple, reliable, durable strongly consider the nightforce SHV 3-10. You can get it in a plain duplex or a holdover type reticle. Trijicon is also doing well.